Plow-standard.



PATENTED JUNE 14, 1904.

T. B. HARDIMAN. PLOW STANDARD.

APPLIOATION FILED JAN. 12, 1904.

N0 MODEL 1 .m w e v M a WM I UNITED STATES Patented June 14, 1904.

PATENT OFFICE.

PLOW-STANDARD.

SPECIFICATION forming part of Letters Patent No. 762,583, dated June 14,1904.

Application filed January 12, 1904. Serial No. 188,720. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS E. HARDIMAN, a citizen of the United States,residing at Mount Carmel, in the county of l/Vabash and State ofIllinois, have invented certain new and useful Improvements inPlow-Standards, of which the following is a specification.

This invention relates to improvements in plows or like cultivators, andaims especially to provide a novel construction of standard, the foot ofthe standard being peculiarly mounted, so as to admit of movementthereof should the shovel of the plow meet with ob-' structions whilethe implement is being advanced.

The foot of the implement is mounted for a pivotal movement and is heldin normal working position by spring means carried by the standardcooperating with a special form of brake means regulable for purposes ofthe invention, as will appear more fully hereinafter.

The invention obviates the necessity of use of brake-pins and themovement of the foot is entirely automatic, thereby doing away with anylikelihood of injury to the operator of the implement in adjusting theposition of the foot, as is often incident to the use of the ordinaryform of this class of devices.

For a full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of eonstruction of the means foreffecting the result reference is to be had to the following descriptionand accompanying drawings.

While the essential and characteristic features of the invention aresusceptible of modidetail perspective view of one of the platescomprising the foot of the implement.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters' The invention is adapted for application to anycommon type of cultivator at present in use and comprises the standard 1and the foot 2. The standard is adapted to be attached to the beam ofthe implement and is braced in any suitable manner ordinarily practiced.The foot consists of spaced plates 2, which are secured pivotally to thelower end portions of the standard by means of a fastening 3 in the formof a bolt or similar device, the plates 2 receiving the lower end of thestandard therebetween. The shovel of the implement is secured to thefoot 2 by means of a clamp member or bolt of suitable type for thepurpose. Extending rearwardly from the upper ends of the plates 2 of thefoot 2 and of corresponding form are segments 4, which are integrallyformed with the plates in the preferable construction of the device. Thesegments 4 are secured together or braced by a transverse fastening 5,as will be readily seen. Above the portion of the standard 1 adjacentwhich the segments 4 are located and also extending rearwardly andintegrally formed with the standard is an extension 6. Between theextension 6 and the segments 4 and pivoted to the standard is abrake-dog 7, a spring 8 interposed between the extension 6 and the upperside of the dog 7 normally holding the latter in engagement with thesegments 4. The spring 8 is mounted upon a guide-rod 9, the lower end ofthe said rod 9 being threaded to permit adjustment of a nut 10, bearingagainst a washer 11, directly receiving the pressure of the spring. Theadjustment of the nut 10 permits of variation of the tension of thespring 8, thereby admitting of a greater or less pressure against theupper side of the dog 7. The dog 7 is provided upon its under side withprojections 12, which are received by notches 13 in the segments 4,thereby forming an interlocking means between the dog and the foot ofthe implement. The opposite end of the dog 7 is bifurcated and thebifurcated portions 1 L embrace the standard upon opposite sides, thepivot-pin 15, securing the dog to the standard, passing through thebifurcated portions aforesaid.

The special function of the dog 7 is to pro vide a brake meanscooperating with the foot to prevent movement of the latter rearwardlyexcept when striking an obstruction resisting its progress. The tensionof the spring 8 serves to hold the dog in proper engagement with thefoot, so that the said foot is prevented from movement except aspermissible by the adjusted tension of the spring. When the obstructionis of a sufiieient size to overcome the tension of the spring 8, theprojections 12 ride out of engagement with the notches l3, and tofacilitate this latter movement the engaging end of the dog 7 isinclined or beveled, the rear portions of the notches 13 being likewiseformed. In order to return the foot to its normal position after theobstruction has been passed and to accomplish this automatically, aspring 16 is utilized. The spring 16 is interposed between the standardand a plate 17, mounted in movable bearings in the rear ends of thesegments 4. The spring 16, further, is located between segments 4:,operating in this position. The plate 17 is carried by a transverse pin18, which is movable in elongated bearings 19 in the segments, as beforepremised, and is secured at a desired adjustment relative to the saidbearings by means of nuts or the like, as shown. The spring 16 ismounted upon a guide-rod 20, similar to that used in supporting thespring 8, the guiderod 20 having one end mounted in the standard and theother end received between spaced extensions 21, provided upon the plate17.

The parts arranged in normal positions the foot is prevented from anyforward movement by means of interlocking engagement of the spring-dog 7with the notches 13 of the segments 4:. However, should the shovelcarried by the foot meet an obstruction as the implement advances andthe said obstruction is of a size liable to injure the implement, thebrake-dog 7 rides out of engagement with the plates of the foot untilthe said obstruction is passed, the foot moving rearwardly in the aboveoperation. The obstruction having been passed, the spring 16automatically returns the foot to its normal position, as heretoforedescribed.

Having thus described the invention, what is claimed as new is 1. In aplow, the combination of a standard provided with a rear extension, afoot pivoted to the standard, a segment rearwardly extended from thefoot, a brake-dog pivoted to the standard at a point between the rearextension thereof and the segment of the foot,

said dog engaging the segment aforesaid, and a spring interposed betweenthe dog and the rear extension of the standard.

2. In a plow, the combination of a standard provided with a rearextension, a foot pivoted to the standard, a segment rearwardly extendedfrom the foot, a brake-clog pivoted to the standard at a point betweenthe rear extension thereof and the segment of the foot, said dogengaging the'segment aforesaid, and an adjustable coil-spring interposedbetween the dog and the rear extension of the standard.

3. In a plow, the combination of a standard, a foot pivoted to thestandard and having a rearwardly-extending segment, a brake-dog carriedby the standard, a spring normally holding the brake-dog in engagementwith the segment of the foot, and a spring having one end bearingagainst the standard and the other end bearing against the segment ofthe foot, said spring being adapted to return the foot to its normalposition after movement thereof.

. 1. In a plow, the combination of a standard, a foot pivoted to thelower portion of the standard, a toothed segment projected rearwardlyfrom the foot, a dog pivoted to the standard and engaging the toothedsegment of the foot, a plate adj ustably mounted upon the segment of thefoot, and a spring interposed between the standard and the adjustableplate aforesaid for the purpose set forth.

5. In a plow, the combination with a standard, a foot pivoted to thestandard and provided with a rearwardly-extending segment, a dog carriedby the standard, spring means normally holding the dog in interlockingengagement with the segment of the foot and other spring meanscooperating-with the segment to return same to its normal position aftermovement thereof.

6. In a plow, the combination with a standard provided with a rearextension, a foot comprising spaced plates pivoted to the standard uponopposite sides thereof, corresponding segments projected rearwardly fromthe plates of the foot, adog pivoted to the standard adjacent the footand engaging the segments of the said foot, spring means for holding thedog in engagement as aforesaid, and adjustable spring means cooperatingwith the foot to return same to its normal position after movementthereof.

7. In a plow, the combination with a standard having a rear integralextension, a foot comprising spaced plates provided withrearwardly-extending segments and pivoted to the standard, the segmentsof the foot being provided with notches, a dog pivoted intermediate thefoot and the rear extension and engaging the notched portions of thesegments, a spring interposed between the dog and the rear extension ofthe standard, and other spring means cooperating with the standard Intestimony whereofI affix my signaturein and the segments toautomatically return the presence of two witnesses. foot to its normalposition.

8. In a plow, the combination with a stand 5 ard, a foot pivoted to thestandard, and ad- \Vitnesses:

justable spring means interposed between the J ACOB F. JOHNSON, foot andstandard. EDWARD B. GREEN.

THOMAS B. HARDIMAN. [L. 8.]

